Utility knife



FIG. 1 is a perspective view of a utility knife, showing my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left-side elevational view thereof;

FIG. 7 is a right-side elevational view thereof;

FIG. 8 is a top plan view thereof;

FIG. 9 is a bottom plan view thereof; and,

FIG. 10 is an alternate perspective view thereof, showing a utility knife blade in an extended position.

The broken lines showing a utility knife blade in FIG. 10 depict environmental matter and form no part of the claimed design. 

CLAIM The ornamental design for a utility knife, as shown and described. 